Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

For coagulation of arsenious sulphide sol, which one of the following salt solution will be most effective? 

  1. A

    Na3 PO4 

  2. B

    AlCl3

  3. C

    NaCl

  4. D

    BaCl2

Solution

Sulphide is –ve charged colloid so cation with maximum charge will be most effective for coagulation.

Al3+ > Ba2+ > Na+ coagulating power.

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